[PATCH 1/2] startup: Mark all essential tasks as our children

[Damien Zammit]

This marks all essential tasks as children of startup (or proc?)

With this patch, rumpdisk appears as an essential task but

        cat /proc/6/stat

still fails with EIO, and the next patch catches the error by printing a
warning.

---
 startup/startup.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/startup/startup.c b/startup/startup.c
index 9faeb462..ea52b1ad 100644
--- a/startup/startup.c
+++ b/startup/startup.c
@@ -350,6 +350,10 @@ request_dead_name (mach_port_t name)
 static error_t
 record_essential_task (const char *name, task_t task)
 {
+  mach_print ("record_essential_task: ");
+  mach_print (name);
+  mach_print ("\n");
+
   struct ess_task *et;
   /* Record this task as essential.  */
   et = malloc (sizeof (struct ess_task));
@@ -368,6 +372,10 @@ record_essential_task (const char *name, task_t task)
   /* Dead-name notification on the task port will tell us when it dies.  */
   request_dead_name (task);
 
+  /* Make task a child of startup */
+  if (task != mach_task_self () && task != proctask)
+    proc_child (procserver, task);
+
 #if 0
   /* Taking over the exception port will give us a better chance
      if the task tries to get wedged on a fault.  */
-- 
2.31.0